64756387584001 has 4 divisors (see below), whose sum is σ = 64844731906132. Its totient is φ = 64668043261872.

The previous prime is 64756387583989. The next prime is 64756387584029. The reversal of 64756387584001 is 10048578365746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63344901020401 + 1411486563600 = 7958951^2 + 1188060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64756387584001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64756387584071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44172159966 + ... + 44172161431.

It is an arithmetic number, because the mean of its divisors is an integer number (16211182976533).

Almost surely, 2^{64756387584001} is an apocalyptic number.

It is an amenable number.

64756387584001 is a deficient number, since it is larger than the sum of its proper divisors (88344322131).

64756387584001 is an equidigital number, since it uses as much as digits as its factorization.

64756387584001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88344322130.

The product of its (nonzero) digits is 135475200, while the sum is 64.

The spelling of 64756387584001 in words is "sixty-four trillion, seven hundred fifty-six billion, three hundred eighty-seven million, five hundred eighty-four thousand, one".